Roswell

Roswell was a small town in New Mexico, in the United States of America. In 1947, a Nedenah flying saucer crashed near Roswell and was salvaged by the United States Army. The crash became a cause celebre for decades among UFO and conspiracy theorists, due to government attempts at covering up the incident after it had been reported in the press. (DW: Dreamland)

In 1970, the Waro attacked the Army base there. (PDA: The Devil Goblins from Neptune)

Androvax an enemy of Sarah Jane Smith and the Judoon stated that the ships that the Nanoforms where building was a recreation of the Space craft that had landed there. (SJA: Prisoner of the Judoon)

A mileometer from the spacecraft later ended up in the collection of Henry van Statten. But it was sealed of after Diana Goddard cemented the base. Meaning that no one could have found the Mileometer. (DW: Dalek).